/Engine/Source/Editor/BlueprintGraph/Classes/BlueprintVariableNodeSpawner.h
If this is a local variable, then this will return theUEdGraphthat it belongs to, otherwise it pulls the outer from the wrapped member-variable property.
Null if the variable is no longer valid, otherwise an object pointer to the variable's owner.
[FFieldVariant](API\Runtime\CoreUObject\UObject\FFieldVariant) GetVarOuter() const